#container{
    
    height: 100vh;
    width: 100vw;
    display: flex;
    justify-content: center;
    align-items: center;
    background:linear-gradient(160deg,rgb(255, 179, 179),rgb(243, 132, 89),rgb(243, 107, 89));
    background-image: url('../imgs/dhbh.png');
    background-repeat: no-repeat;
    background-size: 100%;
    font-family: '北方行书';
}
#back {
	position: absolute;
	top: 5%;
	left: 2%;
	transform: translate(-50%, -50%);
	height: 30px;
	width: 30px;
}
#head_protraint {
    /* opacity: 0.9; */
    z-index: 111;
	position: absolute;
	width: 100px;
	height: 100px;
	top: 65px;
	left: 50%;
	transform: translate(-50%, -50%);
	border: 5px solid rgb(0, 0, 0);
	box-shadow: 2px 2px 3px 2px rgb(85, 85, 85);
	border-radius: 50%;
	background-image: url('../imgs/loge.png');
	background-size: 100%;
	background-repeat: no-repeat;
	background-color: #fff;
}

#next_web {
	position: absolute;
	bottom: 0%;
	left: 50%;
	transform: translate(-50%, 0%);
	background-image: url('../imgs/down.png');
	background-size: 100%;
	height: 60px;
	width: 60px;
	transition: all 0.5s linear;
}

#next_web:hover {
	bottom: 1%;
}

#nav{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    height: 600px;
    width: 1200px;
}

#nav video{
    position: absolute;
    top: 50%;
    left: 0%;
    transform: translate(0%,-50%);
    border-radius: 5px;
    height: 500px;
    width: 850px;
}

#nav textarea{
    font-size: 18px;
    font-family: '华文行楷';
    text-indent: 30px;
    line-height: 30px;
    padding: 10px;
    position: absolute;
    right: 0%;
    top: 50%;
    height: 500px;
    width: 320px;
    transform: translate(0%,-50%);
    border-radius: 10px;
    border: none;
    box-shadow: 2px 2px 4px 3px rgb(141, 141, 141),-2px -2px 4px 3px rgb(255, 255, 255);
}